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11Alexandr11 [23.1K]
3 years ago
8

Why earth is considered a closed system

Biology
1 answer:
nordsb [41]3 years ago
6 0
Https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcQ-UBB8p4jNRbS9Tsp2MvSpy2Ra2Z1ucSmng1KringwaDYa...
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PLEASE HELP ME! I WILL REWARD BRAINLIEST IF TWO PEOPLE ANSWER!!!!!!!
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How did the Rf values differ between pigments and solvents?
lara31 [8.8K]

Answer:

The Rf values indicate how soluble the particular pigment is in the solvent by how high the pigment moves on the paper.

Explanation:

The Rf values indicate how soluble the particular pigment is in the solvent by how high the pigment moves on the paper. Small Rf values tend to indicate larger, less soluble pigments while the highly soluble pigments have an Rf value near to one.

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What happens during metaphase I?
saveliy_v [14]

Answer:

the centrioles are at opposite poles of the cell

the pairs of homologous chromosomes become arranged on a plane equidistant from the poles called the metaphase plate

spindle fibers from one pole of the cell attach to one chromosome of each pair and spindle fibers from the opposite poles attach to the homologous chromosomes

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3 years ago
What is the pressure of 0.540 mol of an ideal gas at 35.5 L and 223 K?
Inga [223]

Answer:

Pressure, P = 28.2 kPa

Explanation:

Given that,

Number of moles, n = 0.54 mol

Volume of ideal gas, V = 35.5 L

Temperature, T = 223 K

We need to find the pressure of ideal gas. The equation of ideal gas is given by :

PV=nRT

R is gas constant

P is pressure

P=\dfrac{nRT}{V}\\\\P=\dfrac{0.54\ mol\times 8.314\ kPa- L/mol- K\times 223\ K}{35.5\ L}\\\\P=28.2\ kPa

So, the pressure of the gas is 28.2 kPa.                              

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3 years ago
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mash [69]

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The most common abiotic factors are atmosphere, chemical elements, sunlight/temperature, wind and water.

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